High power—Technical description
NGT Transceiver System Technical Service Manual 231
External high-power systems
The external NGT high-power system comprises:
• an HPAC module
• an ALC adaptor module
These items are used to interface the NGT transceiver system with vendor high-power
amplifiers.
Supply voltages
The supply voltages for the HPAC and the ALC adaptor modules are shown in Table 12
and Table 13.
Drawing 04-03377
Table 12: Supply voltages for the High-power PA & Antenna Control PCB in the
HPAC
Supply Description Source
+5 V +5 V digital supply IC1
+5 A +5 V microprocessor supply IC1
+12 V +12 V unregulated supply from NGT RF unit
Drawing 04-03407
Table 13: Supply voltages for the High-power ALC Adaptor PCB in the ALC
adaptor module
Supply Description Source
+12 V +12 V unregulated supply from NGT RF unit
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